Engine shutter apparatus



Feb. 9, 1932. McCALEB 1,844,473

ENGINE SHUTTER APPARATUS Filed Jan. 30. 1929 2 Sheets-Shoot 1 ill" Feb. 9, 1932; McCALEB 1,844,473

ENGINE SHUTTER APPARATUS Filed Jan. 30. 1929 2 Sheets-Sheet 2 (@6122? 6x66 ah'cazzd zr m f M @dcnted Feb. *9, 1932 UNITED STATES PATENT OFFICE .lhlDIBERT -MGALEB,@F EVANS'ION. ILLINUIS. ASSIGNOR !'I.0 PINES 'WINTERFRONT COMPANY, 01 CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE Interns snowmen APPARATUS .tpplioation- Merl January so, 1929. Serial No. 336,281.

My invention relates to engine shutter apparatus end is concerned with the provision of such so apparatus which closes when the engine stops, the apparatus comprising no is shutter operating or controlling thermostat, I but nevertheless opening when the engine is running and after it has been running long enough to attain a desirable operating temperature.

in the accompanying drawings:

Fig. l is u more or less diagrammatic View illustrsting the improvements oi the present invention applied to an internal combustion engine of the type commonly employed upon in automotive vehicles;

ltig. 2 is a, vertical sectioned view oi one embodiment oi iluid operated and iluid controlled means for edecting the opening oi the shutters lt igr. 3 is u vertical sectional view of u moditied term of fluid operated and tluid controlled means tor edecting the opening oi the shutters; V

big. t is e. horizontal sectional view tslren on the line le-d of Fig. El and loolring in the direction indicuted by the arrows; and

big. 5 is 21 detail view illustrating how the vertically reciprocnting rod oi the device shown in Fig. 3 may be modified to iecilitete its adjustment with respect to the piston which operates it.

blimilur characters oi reterence router to similar parts throughout the severul views.

lleierring first to F l, reterence numerul represents on eutomotive vehicle internul combustion engine provided with s cooling system of the circulutinp; liquid type includinp; radiator 11, conduits l2 and i8 u. pump 1t for circulating the cooling; liquid. Associated with the radiator 11 is e shutter structure comprising plurality oi pivoted shutters or slots 15, heaving}; s. common operutin g bar it with which is sssociuted u spring 1? which st all times tends to hold the shutters in their closed positions, i. e. to pre vent the flow or" sir through the cells of the radiator.

The apparatus thus described is or may be conventional, end no further description thereof is deemed necessary.

lll

fill

of. fluid from one bellows into the It will be understood, of course, that there ordinarily will be associated with the engine and the radiator a hood which in effect forms a chamber, the addition of air to which is controlled by the shutters 15, 15. It will also r.-

be understood that the improvements of the present invention are not limited to engines sving cooling systems of the circulating liquid type, but may be applied to control the admission of air to hooded or other chambers in which air cooled engines are located.

Located upon the engine, or at any rate mounted upon some element fixed with respect to the engine is a lluid actuated and fluid controlled device for eliecting the open ing of the-shutters when the engine is opersting and for determining when the shutters shall open with respect to the stair-tin of the engine. This device is indicated us a whole by reference numeral 18, and the details 5 thereof are illustrated in Fig. 2.

Device 18 comprises a fixed bracket or base 19 whereon is disposed a. metal bellows indicsted at 20. Secured to end closing the upper end of the bellows 20 is a wall or partition 2i which is similarly secured to end constitutes the bottom closure for a second metal bellows 22. The upper end of the bellows 22 is secured and closed by the bottom of :1 metal chamber 23, chamber 23 being provided with s cover 24, air vent 25 and a filling opening closed by a suitable plug 26. Chamber 23 is conveniently attached to the engine frame, or is otherwise held stationary with respect to the bracket or base member 19 which supports sud constitutes the lower closure for the bellows 20. It will thus be understood that the-movements of the two bellows occur between the fixed elements 19 and 23, the chamber defined by the bellow; 520 being ensmelled when the chamber defined by the bellows 22 is enlarged and vice versa. Passage other is, however, at all times prevented by their common partition 21.

@ccupying the chamber defined by the bellows 22 and normally occupying but a slight part of the housing 23, is a suitable liquid 27 which is preferably so constituted that it will not freeze or become unduly sluggish, even Such brake liquids commonly comprise.

mixtures of alcohol and castor oil in suitable proportions. The liquid 27 will.

' hereafter be referred to as the controlling liquid. This controllin liquid may flow freel into the chamber defined by bellows 22 rom the chamber defined by the housing 23 through a flap valve 28 of conventional or other suitable design, the flap of this valve preferably seating b gravity and thus preventing movement 0 the controlling liquid upwardly through the valve while affording no resistance to downward movement of the controlling liquid. Any movement of the controlling liquid from the chamber defined by the bellows 22 into the chamber defined by the housing 23 must occur through a restricted opening 29 which may be regulated by a needle valve 30 which may be manipulated by removing the cover 24 or be manipulated by means of a suitable wrench inserted through the filling opening normally closed by plug 26.

Communicating with the lower end of the chamber defined by the bellows 26 is a conduit 31 which extends into the engine sump as shown in Fig. 1 and is connected to the oiling system of the engine, preferabl by being connected to the pressure side 0 the oil circulating pump (not shown) so that a substantial Oll pressure will be established and maintained in the chamber defined by the bellows 20 whenever the engine is operating.

Partition 21, which is common to both the bellows 20 and 22, has fixed thereto an arm 32 connected by a link 33 with a bell crank 34, which is pivoted to the housing 23,.thebell crank 34 being in turn connected to rod 35 which is adapted, through bell crank 36, to effect the opening of the shutters 15, 15 against the tension of sprin 17 when the partition 21 moves upwardly clue. to the enlargement of the chamber defined by bellows 20 and the consequent ensmallment of the chamber defined by bellows 22.

When the engine is not operating, the several parts are in the positions shown in Figs;

1 and 2. As soon as the engine is putin'o eration, a substantial oil pressure is esta lished within bellows 20, tending to distend the bellows 20 and consequently to collapse.

the bellows 22. Sudden collapse of the bellows 22 is, however, prevented because of I to=fiow upwardly through restricted opening the fact that the escape of the controlling liquid from the bellows 22 must be made through the restricted passage 29. Ultimately, however, the pressure within the bellows 20 causes enough of the controlling liquid 29 to permit the wall- 21. to occupy a position where, through linkage 33, 34, 35, etc. 1t holds the shutters 15, 15 0 en against the tension of the spring 17. e passage 29 is so restricted, either by adjustment of the needle valve 30 or otherwise, that by the time the shutters have opened, the engine will have attained a satisfactory operating temperature. When the engine ceases to operate, the oil pressure in the bellows 20 is, of course, relieved, whereupon the spring 17 closes the shutters and, acting through the linkage which connects the partition 21 with the shutters, etfects the collapse of the bellows 20 and the distending of the bellows 22, the flap valve 28 acting at this time to permit free flow of the controlling liquid 27 into the bellows 22.

The modified form of fluid operated and fluid controlled actuating mechanism shown in Figs. 3 and 4 comprises a housing 40,

which is secured to or otherwise fixed with respect to the engine frame, this housing providing a reservoir 41 for the controlling liquid 42, an oil pressure chamber 43 adapt-. I

controlling liquid from chamber 45 into the] reservoir. All movement of the controlling liquid from chamber 45 into the reservoir 41 must occur through a restricted assage 48 which may be regulated by a need e valve 49.

Chamber 45 is separated from the oil pressure chamber 43 by a piston or movable wall 50, which is preferably rovided with upwardly and downwardly i acing cup washers 51 and 52 to prevent any mixing of the oil with the controlling li uid. A coil spring 53 having its upper en seated in an annular recess in the partition 46 and its lower and engaging around a boss 54 forming'part of the piston, normally tends to hold the piston in its lower position as illustrated, that is to say, against the bottom bosses 55, 55 formed on the lower closure of the housing 40.

Mounted for vertical reciprocation in the housing 40 and having sliding bearing in the partition 46 and the upper closure of the housing 40' is a rod 56 having its upper end operatively connected with the shutters (not shown in this figure) through suitable lever and link mechanism, part of which is illustrated at 57 and 58.

- The operation of this mechanism is as fol-' being cite slow due to the restricted passage through which the controlling liquid must esgcape from the chamber 45 into the reservoir 115 When the piston has nearly reached the end of its npwnrdi travei under the pressure of oii in chamber 43, it engages the lower end of rod 56 and moves the letter upward- 3 lg], thns eiiiecting the opening of the shut- 5%, etc, The iever and link mechanism preforably so designed thnt relatively small upward movement of the rod on wiii move the shutters hroni their l nii y closed position this arrangement end the iact that the piston. does not enga e the rod 56 nntii none the end. of the UPWZLFQ movement piston. I am enebied to defer any or movement of the hutters soever 'nntii in engine hos been opernt tor e snbctmniei period oi time,

o v h ne from the by ciosunc inilner i shown in wili p shntt cools nich cools oi: teinnerntnrc oi: the ion c a c y 1 U the operation or the opening menns starting of the englne.

tore through iever and link mechanism 57,-

to their iuiin opened position. virtue oi,

for a substantial period of time after the 3., In combination with an engine and shutters for controlling the flow of air which cools th engine, means for utilizing the power of the engine to open the shutters when the engine is operating, and automatic means acting independently of the temperature of the engine for preventing the operating means from moving the shutters to fully opened position until after the lapse of a substantial period of time following the starting of the engine.

4. In combination with an engine and shutters for controlling the flow of air which cools the engine, means for utilizing the power of the engine to open the shutters when the engine is operating, and hydraulic controlling means preventing the operating means from actuating the shutters to fully open position until the engine after stcrting has been in operation for a substantial period of time.

5.. in combination with an engine and shutters for controlling the flow of air which coois the engine, means for utilizing the fluid pressure developed by the engine for opening the shutters, and hydraulic controlling means for delaying opening of said shutters nntii the engine after starting has been operating for e substantial period oi time,

c. in combination with an engine end shutters for controlling the flow of sir which cools the engine, means for ntiiining the power oi? the engine to open said shnters,-

end means deriving its ower from the engine but operating indepen ently of the tempera tune out the engine for preventing actnn oi the shutters by the operating means the engine after starting has been oper n substantial period of time, end permitting the shutters to be actuated the opening means.

in combination with an engine end shutters for controlling the how of air which coois the engine, means for utilising power oi the. engine to open snioi shnttei's, end hydraulic means for preventing octnn' tion oi the shutters hy the open nntii the engine after starting hos i op einting for a snbst-nntinl period oi time, end then permitting the shutters to nctnn'ted by the opening means,

8 in combination with on engine one? shnh ters controiling the how of air which. coois the engine, a iiquid operated and iiqniii con troiied actuating device for seid shutters ranged to effect no movement of the shutters trolling chamber and a reservoir, means whereby the controlling chamber is ensmalled when the oil pressure chamber is enlarged and vice versa, means connecting said oil chamber with the oil pump of the engine, a controlling liquid occupying the controlling chamber and said reservoir, means permitting free movement of the controlling liquid from the reservoir into the controlling chamber and only restricted movement of the controlling liquid into the reservoir from the controlling chamber, and means operating to efi'ect the opening of the shutters when the controlling chamber is ensmalled and to permit closure of the shutters when the controlling chamber is enlarged.

10. vIn combination with an engine and shutters for controlling the flow of air which cools the engine, a first chamber adapted to receive liquid pressure from the engine when same is operating, asecond chamber, a reservoir, means whereby the second chamber is ensmalled when the first chamber is enlarged and viceversa, a controlling liquid in said second chamber and said reservoir, means permitting free movement of the controlling iquid from the reservoir into the secon chamber but permitting only restricted movement of the controlling liquid from the second chamber into the reservoir, and means actin to open the shutters whenthe second cham er is ensmalled and permitting closure of the shutters whenthe said second chamber is enlarged.

11. In combination with an engine and shutters for controllin the flow of air which cools the engine, a uid-pressure chamber ada ted to enlarge when the engine is in o eratlon and immediately to ensmall when t e operation of the engine ceases, hydraulic controlling means for insuring that the enlargement of said chamber is slow, and means for opening the shutters when the chamber is enlarged and for closin the shutters when the chamber is ensmalle 1 12. In combination with an engine and shutters for controllin the flow of air which cools the engine, a uid-pressure chamber adapted to enlarge when the engine is in operation and immediately to ensmall when the operation of the engine ceases, regulating means associated with said chamber for insuring that the enlargement of said chamber occurs slowly, and means for opening the shutters when the chamber is enlarged and for closing the shutters when the chamberis ensmalled.

13. In combination with an internal combustion engine, mechanism for utilizin the oil pressure of the engine to actuate a evice associated with the engine, said mechanism comprising an oil pressure chamber, a controlling chamber and a reservoir, means whereby the controllin chamber is ensmalled when the oil pressure 0 amber is enlarged and controllin vice versa, means connecting said oil chamber with the oil pump of the engine, a controlling liquid occupying the controlling chamber and said reservoir, and means rmitting free movement of the contro ing liquid from the reservoir into the controlling chamber and onl restricted movement of the liquid into the reservoir from the contro ling chamber.

let-In combination with an internal combustion engine, mechanism for utilizin the oil pressure of the engine to actuate a evice associated with the en ine, said mechanism comprising a first cham r adapted to receive liquid pressure from the en ine when same is operated, a second cham r, a reservoir, means whereby the secondchamber is ensmalled when the first chamber is enlarged.

and vice, versa, a controlling liquid in said second chamber and sa d reservoir, and means permlttlng free movement of the controllm liquid from the reservoir into the secon chamber but permitting only restricted movement of the controlling liquid from the second chamber into the reservoir.

15. In combination with an internal combustion engine, delayed-action mechanism for utilizing oil pressure of the engine to actuate a device associated with the engine, said mechanism comprising a member subject to and movable under oil pressure from the engine, a chamber which is ensmalledb movement of said member under engine 011 pressure, a reservoir associated with said chamber, a controlling liquid occupying said chamber and reservoir, means permitting free movement of the controlling hquid from the reservoir into said chamber and onl restricted movement of the controlling hquid into the reservoir from said chamber, and a power-delivery element which is operatively engaged by the aforesaid movable element only after the latter has had a predetermined amount of movement in response to engine oil pressure.

16. In combination with an internal combustion engine, delayed-action mechanism for utilizing oil pressure of the engine to actuate a device associated withthe engine, said mechanism comprising a member subject to and movable under oil pressure from the engine, spring means resisting movement of said member in response to engine .oil

pressure, a chamber. which is ensmalled by into the reservoir from said chamber, and a power-deliver element which is operative- 'ly engaged by t e aforesaid movable elementuo only after the latter has had a predetermined lid lib

nmount of movement in response to engine oil pressure.

17. In combination "with an engine and shutters for controlling the flow of air which tools the engine, means operable from the engine when runnin to open the shutters, and means operable y the first said means :ior retarding the opening oi the shutters.

id. in combination "with an engine and shutters for controlling the flow of air which cools the en 'ine means for opening the shutters, a mem er adapted to be moved by the engine when put into operation, and means for retarding the movement of said member, said member being adapted to o erate the means for opening the shutters a ter it has moved through a substantial distance.

19. In combination with an engineand shutters for controlling the flow of air which cools the engine, a piston ada ted to be moved by fluid pressure produced y the operation of the engine, hydraulic controlling means for retarding the movement of the piston, and linkage mechanism adapted to 0 en the shutters and adapted to be actuated by said piston after it has moved a substantial distanee.

in witness whereof, I hereunto subscribe my name this 28th da of J anuar 1929.

AL'BL RT G. M0 ALEB. 

